Nar no one mate. I have a spare (crappy) handheld on loan so I'll get that back and compare with my 'decent' one see if they match up. Pleased you think the inline will be wrong..I'm hoping so! If the handheld is giving a correct reading that means my RO is working exactly as it should giving around 97% ish efficiency. Is there any way to calibrate the Inline one? Never done a calibration. Inline is saying 0ppm going into tank.
I have inline TDS meters on all my vans the readings they give are way off the mark I would go by the hand held I have two hand held ones and they always read the same I just ignore the ones on the system s ,So...the plot thickens. I've started to fill my tank for tomorrow. The TDS out of the tap is saying 330ppm approx (I say approx as it varies by the second it seems). The inline TDS meter in my van is saying the RO is bringing it down to around 20-21ppm. However I tested it with my handheld meter and that's reading 9ppm coming out of the RO! Which is much more satisfactory - if it's correct! So now the quandary is is my handheld or Inline meter off? ?
You can re calibrate them but I have never bothered , just buy a new hand held every two three years they are less than £20 for a good one
Well if both are saying 0 going into the tank then they'll both have to be wrong for you not to have pure. The inline before DI might be dodgy, ring PF in the morning and ask them.
All I care about at the end of the day is if I'm producing 0ppm and there's nothing 'wrong' with my system. Which is what these 'false' readings lead you to believe which is incredibly frustrating if everything is working as it should. it would be nice to have correct readings especially as these inline meters cost over £70. I might have a go at calibrating it. I guess that's what PF will say but I might give them a ring, cheers bud.
My inline tend to read 1 higher or lower than the TDS meter but that could just be the sample at the time. Unfortunately I know very little about them as mine are nearly a year old and never even had a proper look at them.
Well mines over 2 years old now. Maybe the sensor gets dirty or something? ?
I would be OK with 1 higher or lower, but this is a difference of 11-12
Calibrating them is a pain you need calibrating fluid , although I would assume a water source proven to be 000 by two other meters should be safe to use the screw head thing is fiddley to adjust and depending on age might not turn easily , if it’s under warranty get it sorted foc if not just use your hand held meter , just take a sample from the hose going into the tank it’s easy enough to do .
Mine was very similar to your readingsWell mines over 2 years old now. Maybe the sensor gets dirty or something? ?
I've just give it a go. No signs of a calibrating screw from the front or back, took the back off, no signs there either. Back put back on, forget it lol. I'll ring PF see if it's maybe under warranty.
I have just had a look at one of mine I thought the calibration screw was inside the cover I took it apart but cannot see anything, Ime sure my original one was adjusted like this , but that was 15 years ago so maybe they have altered them ?...
You cannot calibrate them but if you wipe the probes with vodka this normally does the trick. This is for in line TDS metersWell mines over 2 years old now. Maybe the sensor gets dirty or something? ?
I'm not wasting my vodka on a bloody TDS meter ? joking, I'll give this a try thanks for the advice @doug atkinson much appreciated mate!
I have had problems with my inline meter. I actually contacted the company but they just ignored my email. I honestly think they are a waste of money. I still test now with the hand held meter. But I will try Doug’s idea with the vodka.
Glad to hear it's improved. Gives me some more hope mine might just take time to improve further ??
Are you still having problems? Have you checked your meters are giving correct readings?
Still hasn't got any better than 93%. I also bought some calibration fluid and a genuine hand-held. After calibrating the inline one I checked against the hand-held and it agreed on product water but they differed quite a bit on the incoming tap TDS. So my trust in one probe the of the inline isn't great.
Yes I've found the same with Northumbrian Water, in winter months tds between 60-80 and the last month or so it's been over 500. I asked Northumbrian Water about it in the past and its something do with them drawing water from 2 different reservoirs during summer months.
